Comparing Geometry Correction Capability of AGGS and TGCS Tamper Control Systems on Amtrak’s Northeast Corridor

2012 ◽  
Author(s):  
Jonathan M. Wnek ◽  
Steven M. Chrismer
Keyword(s):  
Control System ◽  
Control Systems ◽  
High Speed ◽  
Ride Quality ◽  
Control Software ◽  
Passenger Cars ◽  
Continuous Action ◽  
Track Geometry ◽  
Before And After ◽  
Geometry Correction

One of Amtrak’s high-speed continuous action tampers has been fitted with TGCS (Track Geometry Control System) tamper control software to compare the quality and durability of geometry correction it provides with that of the existing tamper control system, AGGS. Comparison between the two systems is made by reviewing measured track geometry data from before and after maintenance, and by reviewing changes in ride quality accelerations of instrumented passenger cars. Although the testing program is in its early stages and the number of test locations so far is limited, results to date are very much in favor of TGCS.

scholarly journals A Prologue of Git and SVN

2019 ◽  
Vol 9 (1) ◽  
pp. 988-990
Keyword(s):  
Control System ◽  
Open Source ◽  
Control Systems ◽  
Source Code ◽  
Version Control ◽  
Control Software ◽  
The World ◽  
Revision Control ◽  
Version Control System ◽  
General Public License

Version Control Software or Revision Control Software are the most important things in the world of software development. In this paper, we have described two version control tools: Git and Apache Subversion. Git comes as free and open source code management and version control system which is disseminated with the GNU general public license. Apache Subversion abbreviated as SVN is one amongst a software versioning and revision control systems given as open source under Apache License. Git design, its functionality, and usage of Git and SVN are discussed in this paper. The goal of this research paper is to accentuate on GIT and SVN tools, evaluate and compare five version control tools to ascertain their usage and efficacy.

RESPONSE OF A HIGH-SPEED WAVE-PIERCING CATAMARAN TO AN ACTIVE RIDE CONTROL SYSTEM

2021 ◽  
Vol 158 (A4) ◽  
Author(s):  
J AlaviMehr ◽  
M R Davis ◽  
J Lavroff ◽  
D S Holloway ◽  
G A Thomas
Keyword(s):  
Control System ◽  
Control Systems ◽  
High Speed ◽  
Control Surface ◽  
Control Algorithms ◽  
Active Centre ◽  
Ride Control ◽  
Control Step ◽  
Set Up ◽  
Ride Control System

Ride control systems on high-seed vessels are an important design features for improving passenger comfort and reducing motion sickness and dynamic structural loads. To investigate the performance of ride control systems a 2.5m catamaran model based on the 112m INCAT catamaran was tested with an active centre bow mounted T-Foil and two active stern mounted trim tabs. The model was set-up for towing tank tests in calm water to measure the motions response to ride control step inputs. Heave and pitch response were measured when the model was excited by deflections of the T-Foil and the stern tab separately. Appropriate combinations of the control surface deflections were then determined to produce pure heave and pure pitch response. This forms the basis for setting the gains of the ride control system to implement different control algorithms in terms of the heave and pitch motions in encountered waves. A two degree of freedom rigid body analysis was undertaken to theoretically evaluate the experimental results and showed close agreement with the tank test responses. This work gives an insight into the motions control response and forms the basis for future investigations of optimal control algorithms.

Effect of Track Geometry and Rail Vehicle Suspension on Passenger Comfort in Curves and Transitions

1977 ◽  
Vol 99 (4) ◽  
pp. 841-848
Author(s):  
G. R. Doyle ◽  
M. A. Thomet
Keyword(s):  
High Speed ◽  
Rolling Stock ◽  
Vehicle Suspension ◽  
Passenger Cars ◽  
Area Formula ◽  
Passenger Comfort ◽  
Track Geometry ◽  
Rail Vehicle ◽  
Current Area ◽  
Six Degree Of Freedom

Passenger comfort is an important constraint on high-speed operation in curves and transitions. The effect of track geometry and vehicle suspension characteristics on passenger comfort were investigated with a six-degree-of-freedom, time domain simulation of the car body dynamics. The rail vehicle was simulated at constant speed on transitions and curves to generate acceleration profiles at a passenger’s seat location. The main conclusion of this study is that modern rolling stock can negotiate curves at a higher unbalanced superelevation than is recommended in the current AREA formula without exceeding passenger comfort standards. Also, the minimum spiral lengths as determined by the AREA formula are adequate for passenger cars with stiff roll characteristics, such as the Metroliner vehicles.

Test-Bed Infrastructure for Industrial Control Systems Validation

2006 ◽  
Author(s):  
Emanuelle Carpanzano ◽  
Andrea Cataldo
Keyword(s):  
Control System ◽  
Control Systems ◽  
Agile Manufacturing ◽  
Industrial Plant ◽  
Small Scale ◽  
Automation System ◽  
Test Bed ◽  
Control Software ◽  
Logic Control ◽  
Process Simulator

To properly deal with the increasing complexity of industrial distributed and agile manufacturing control systems, the use of methods and tools that support the designer in the definition, implementation and verification of intelligent logic control software is more and more necessary. Nowadays, many different software tools are available to face the rapid prototyping and closed loop simulation based verification of an automation system control software. The possibility to validate the control strategies of an automation system for industrial plant during its design phases is very advantageous. In fact the control system validation on plant site is very expensive, both for the high man power costs and for the long time required to implement and test the software code implemented in the control system devices. Scope of this paper is to present the hardware/software infrastructure designed to interface an industrial PLC to a laboratory process simulator and to a real small scale plant, in order to validate the industrial PLC software control code before the real plant commissioning phase. In particular the PLC, communicating with its remote input/output terminal boards via Profibus, is firstly connected to the process simulator for a roughly control algorithm validation, secondly it is interfaced to a small scale plant so to deeply test the PLC logic control solution.

scholarly journals THE QUALITY CONTROL SYSTEM OF TECHNOLOGICAL PARAMETERS OF THE REPAIR OF WHEELSETS OF PASSENGER CARS

2015 ◽  
Vol 2 (158) ◽  
Author(s):  
Vadim Petukhov ◽  
Alexandra Gaivoronskay ◽  
Margarita Sukhanenko
Keyword(s):  
Mathematical Model ◽  
Quality Control ◽  
Control System ◽  
Control Systems ◽  
Quality Parameters ◽  
Technological Parameters ◽  
Passenger Cars ◽  
Technological Factors ◽  
Comprehensive Information ◽  
The Status

The analysis of control systems of technological factors and quality parameters of repair of wheelsetsof passenger cars in the process. Based on this mathematical model of the process of quality control forrepair of wheel pairs, which allows to obtain comprehensive information about its life cycle, causescharacteristic changes of the status of all of its parameters and adequately reflects information abouttechnical condition for any period of time.

Analyzing and Simulating the Usual Interpolation Algorithm of Numerical Control Systems

2011 ◽  
Vol 215 ◽  
pp. 310-314
Author(s):  
Xue Jun Nie ◽  
Ping Dong Wu ◽  
Hong Qi Luo ◽  
G.J. Xiong ◽  
Xiao Hua Tang
Keyword(s):  
Control System ◽  
Control Systems ◽  
Dynamic Simulation ◽  
Visual Basic ◽  
Numerical Control ◽  
Interpolation Algorithm ◽  
Numerical Control System ◽  
Control Software ◽  
The Core ◽  
Visual Basic 6.0

Interpolation algorithm is the core of control software in numerical control system. Some usual interpolation algorithms of CNC system were analyzed and compared. Dynamic simulation of point-by-point comparison interpolation was carried out with Visual Basic 6.0.

scholarly journals Terrain estimation via vehicle vibration measurement and cubature Kalman filtering

2019 ◽  
Vol 26 (11-12) ◽  
pp. 885-898 ◽  
Author(s):  
Giulio Reina ◽  
Antonio Leanza ◽  
Arcangelo Messina
Keyword(s):  
Kalman Filter ◽  
High Speed ◽  
Intelligent Vehicles ◽  
Vibration Measurement ◽  
Vehicle Body ◽  
Ride Quality ◽  
Passenger Cars ◽  
Cubature Kalman Filter ◽  
Surface Irregularities ◽  
Natural Terrain

The extent of vibrations experienced by a vehicle driving over natural terrain defines its ride quality. Generally, surface irregularities, ranging from single discontinuities to random variations of the elevation profile, act as a major source of excitation that induces vibrations in the vehicle body through the tire–soil interaction and suspension system. Therefore, the ride response of off-road vehicles is tightly connected with the ground properties. The objective of this research is to develop a model-based observer that estimates automatically terrain parameters using available onboard sensors. Two acceleration signals, one coming from the vehicle body and one from the wheel suspension, are fed into a dynamic vehicle model that takes into account tire/terrain interaction to estimate ground properties. To solve the resulting nonlinear simultaneous state and parameter estimation problem, the cubature Kalman filter is used, which is shown to outperform the standard extended Kalman filter in terms of accuracy and stability. An extensive set of simulation tests is presented to assess the performance of the proposed estimator under various surface roughness and deformability conditions. Results show the potential of the proposed observer to estimate automatically terrain properties during operations that could be implemented onboard of a general family of intelligent vehicles, ranging from off-road high-speed passenger cars to lightweight and low-speed planetary rovers.

scholarly journals Examination of Vehicle Performance at High Speed and High Cant Deficiency

2011 ◽  
Author(s):  
Brian Marquis ◽  
Jon LeBlanc ◽  
Ali Tajaddini
Keyword(s):  
High Speed ◽  
Lateral Force ◽  
Ride Quality ◽  
High Speed Rail ◽  
Vehicle Performance ◽  
Track Geometry ◽  
Track Maintenance ◽  
Performance Requirements ◽  
Rail Vehicles ◽  
The Us

In the US, increasing passenger speeds to improve trip time usually involves increasing speeds through curves. Increasing speeds through curves will increase the lateral force exerted on track during curving, thus requiring more intensive track maintenance to maintain safety. These issues and other performance requirements including ride quality and vehicle stability, can be addressed through careful truck design. Existing high-speed rail equipment, and in particular their bogies, are better suited to track conditions in Europe or Japan, in which premium tracks with little curvature are dedicated for high-speed service. The Federal Railroad Administration has been conducting parametric simulation studies that examine the performance of rail vehicles at high speeds (greater than 90 mph) and at high cant deficiency (greater than 5 inches). The purpose of these analyses is to evaluate the performance of representative vehicle designs subject to different combinations of track geometry variations, such as short warp and alinement.

Control System for Suppressing Tracking Error Offset and Multiharmonic Disturbance in High-Speed Optical Disk Systems

2012 ◽  
Vol 132 (3) ◽  
pp. 347-356 ◽  
Author(s):  
Yuta Nabata ◽  
Tatsuya Nakazaki ◽  
Tokoku Ogata ◽  
Kiyoshi Ohishi ◽  
Toshimasa Miyazaki ◽  
...  
Keyword(s):  
Control System ◽  
High Speed ◽  
Tracking Error ◽  
Optical Disk
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